diff --git a/requirements.txt b/requirements.txt
index 1a9adb4..0abb41a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ matplotlib==3.1.0
 mpu==0.19.0
 numpy==1.16.4
 pandas==0.24.2
-protobuf==3.8.0
+protobuf==3.18.3
 pyparsing==2.4.0
 python-dateutil==2.8.0
 pytz==2019.1